notes



H. HODGE 8.-, J. P. NoYEs.

AUTOMATIC DENTAL MALLET.

No. 67,114. Patented July'zs, 1867.

uitrit gis-tes stent ffies,

HIL HODGE AND AJOSEPH l. NOYES, OF BINGHAMTON,I NEW YORK,` ASSGNOR BY MESN E ASSIGNMENTS TO SAMUEL S. WHITE.

Letters Patent No. 67,114, dted July 23, 1867.v

Improves Acronimo DENTAL MALLET.

Elite Stimuli nfrreh tt iii there Entier: atmt aut making part uf the sms'.

TO ALL WHOM IT MAY GONCER:

Be it known that we, HIM. Home and Josera P. Nous, bothof Bingham-ton, in the county of Broome, and State of New York, hive invented a new and useful Improvement on Automatic Mallets; and we do hereby declare that the following is a full, clear, and exact description of the construction and peraton' of the same,

reference being had to the annexed drswings,.making n part of this speciction, a's they are therein respectively numbered.

Figure 1 is a'longitudinsl elevation. A v

Figure 2 is s longitudinal central section, showing the hammer o r mullet a, the spring b, which being couipressed, communicates its force to the mallct; the shaft or pin d, upon which the mollet slidesback and forth; the rod orshafte, which communicates the blow of the mallet tothe point f; g represents a. spring, by which the point is pressed back and held as 'firmly in its place as in the ordinary hand-plugger; his athumb or {ingerscrew, (shown more fully in iig. 3,) by which the blovvl is communicated and its force modified at pleusune. i

Figure vshows a longitudinal elevation of the body of theinstrument after the' case (shown in fig.,1) has 'been removed. I

h is the finger-screw, (shown in iig. 2,) which moves the lever e' about thel pivot. k( A shoulder, l, turns the piece m about .a pivot, n, and thus forces back the slide o (shown more fully in iig. 4) until the end of the fingerscrew at 71. comes in contact with the slide, uhen the front portion of it is pressed down against the case, thus throwing back the other' end and disenguging the catch at p, and allowing the hammer to' communicate its blow.

v With any given spring, b, the force of the blow depends upon the compression of the spring, and this, as will seen, is graduated by screwing in or out the finger-piece. Y

Figure 4 is a. sectional View of the solid chsmber, showing the manner in which the slide o is heldin position and pressed sgainst the catch by the spring g.

What we claim us our invention, and desire to secure by Letters Patent, is-

1. The combination, substantially als shown and describedin the drawings and specifications, before referred to, by which the b lorr is produced by simply pressing down the finger-piece h.

2.- `The 'grnduntion of theforce of the blow by the screw, combined with the finger-piece, substantially as `shown and described. i 3. The combination, substantially as shown and described, by which the point f is held firmly in its place and any sliding in the instrument avoided, thus enabling it to be used usan ordinnrylhandplugger, whenever desired.

HIAL HODGE, JOSEPH l. NOYES.

Witnesses:

J. H.` Cnrnsxnmr, E. K. Surrxx. 

